Machine-operated portable fan



' 1,620 457 March 8, 1927. H GATTI 1 MACHINE OPERATED PORTABLE FAN FiledMarch 51, 1923 Patented Mar. 8, 1927.

onrrzeo rsra' rss HE'CTOR'GATTI, OF CHICAGO, ILLINOIS.

MACHINE-OPERATED PORTABLE FAN.

Application fildd March 31, 1923.

My present invention relates toa machineoperated portable fan such asmay be readily placed upon a sewing machine. I

The purpose of my invention is to provide a deviceOfthe class describedwhich is extren'le'ly simple and economicalin constructionand-operationiand'also one which is particularly well adapted toberreadilyapplied or: easily removed from a :seWing machine tor othermachine having :a rotating part.

A further object .of my invention is to provide a machinewperatedportable .faniof such construction, combinationio'fparts and mode ofoperati0n that it maybe placed in desired position upon the sewingmachine table without the use of tools and without the use of anyclamps, screws or other attaching-iparts and furtherto have the deviceof sucliconstruction that it may be'placed in-operati-ngposition uponpractically any sewing'machineor in varioustpositions upon anygivenmachine'either without any"ad justinent orwith a small amount ofadjustment of the parts of the device.

Further purposes are to .provide a fan whiclrcan'be readily belted or'operatively connectedto practically. any sewing machine orsimilarmachine having rotating projecting :parts and readily disconnectedtherefrom without the use of tools and without having to unscrew clampsor other "attaclr ing'devices; to provide a fan which has a wide rangeof adjustabilityiboth asnto' height and angular arrangement of thevfia'ntorp'rovide a fan which is wellguardedto prevent a persorfls hairorcloth or other material being worked on being drawn into 'the fanandito havethe: guard enclose the fan proper on all sides, but allow thefan shaft :pulley to be readily accessible for connecting the beltthereto.

Other purposes and advantages of my in vention will appear fromthespecification and claim herein.

Fig. 1 isa frontview of afan embodying my invention as applied to asewing'machine.

Fig.2 is a side view ofithemachine looking at the sidetlrat is normallyto'ward the sewing machine.

Figs. --3 and 4 are respectively side and sectional views on an enlargedscale through the pulley provided to be attached to the hand wheelxnutiReferring to i the drawings in a. more par- Serial No.*629,130.-

ticular description it will be see'nthat my inventioniis shown-asapplied to :a sewing machine of a conventiona'l formfhaving-a table andaihead8 from the right of which projects the revolving shaft 9 carryingthe hand wheel L10 and pulley 11 for operating themachine in the usualway from below either "byrfootuor other-motive power. From therightnendof the sha'ft'9 and beyond ithe pulley 11 there projects the usualIri'c- 'tion nut. l2.usedito normally lock the idri wen pulley I 11 to!the shaft L l 2i 'a-nd thereby-- to all of the operating parts of the lmachine. The friction nut 12 is accordingly continually rotating whilethe machineis in operation.

To" the "friction nut '12 there i is clamped a readily attachable anddetachable pulley 13 preferably having two grooved faces or peripheries14 and 15=of different sizes with the smaller pulley face 15 to theoutside or tothe' right of the parts as shown in Fig. 1.

Thepulley lii-i-s constructed to be readily attached to the friction nutl2 as by fastening tothe left hand side of the pulley a split flange IIG-the endsof which are free with their extremities turned outwardly andper-1 forated to "receive a bolt 17 and nut 18 whereby the ends =of thefiange may be drawn together to adjust andhold the-same to various sizesof friction nuts.

The heavy or weighted and wide bottomed base 19 is provided at thebottom with'a thick cushion 19 of felt or the like with the cushionthick enough to protect the sewing machine table 7 from injury "and withthe base 19 heavy enough to readily hold the fan support-ed thereabovein proper position wherever placed upon the table without furtherattaching means. base 19 is provided a central open-topped socket 20into which is adjustably placed the lower end'of the lower part 21 o fthe 'two partpost' 22 with a set screw 23 set*into the base near itsupper end and adapted to be set up against the post 21 andso hold thepost-at desired elevation.

The upper end-ofthe lowerpart 21 and the lower end of the upper part 24'of the post 22 are conveniently shaped or cut away so as to overlapandbeadjustably connected as by abolt '25 an'dthunib nut '26engaging saidadjacent extremities of the two parts ofthe post. Preferably theadjustable joint is provided also with correspondingly corrugated disks27 and 28mounted on the 'b'o'lt25 between the opposing faces In the ofthe post parts so as to get a more p0sitive holding of the fan inseveral desired positions.

About midway of the length of the upper part 24 of the post there isrevolubly mounted in said post the fan shaft 29 as by said shaft beingjournaled in a suitable hole or bearing in the post and also in thepreferred form by said shaft being supported near the end of its lefthand projecting part by a bracket 30 secured to that side of the post.The part of the bracket directly suporting the shaft is spaced from thepost. pon the portion of the fan shaft 29 be tween the said bracket andthe post is mounted the small pulley 31 as by its hub being set to saidshaft by set screw 32. Above the pulley 31 the bracket 30 bends backtowards the post 22 but with the extremity of said bracket spacedslightly from said post so that the belt 33 used to operatively connectthe pulley 13 on to the sewing machine andthe fan shaft pulley 31 may bereadily placed over the top of the pulley 31. The inturned upper part 30of the bracket forms a guard over the top of the pulley 31 both when thefan is con nected to a sewing machine or when the fan may be separatedtherefrom.

Upon the part of the shaft 29 projecting to the right of the post 22 asthe parts are seen in Fig. 1 there is fastened the hub 34 of fan 35preferably of the form having several curved or slanting blades 36adapted to catch the air and project it in the desired direction. To theupper part 24 of the post is firmly secured an annular sheet metal band37 preferably channel-shaped in form between the two parts of which isfastened the edge of a relatively fine mesh wire work guard 38 whichextends to the right from the metal band 37 as a cylindrical portion 39to a plane beyond the reach of the fan blades 26 at which plane the flator disklike portion 40 of the guard completes the guard on the fan sideof the post. The guard is completed on the other side by a disk of wirework 41 which may be of coarser wire as this is upon the side of the fanwhere the air is passing from the fan instead of to the fan. In order togive convenient access to the fan, this guard disk 41 may be mounted onan annular wire edge 42 so as to make it separate from the band 37 andthe disk and its edge then swingingly mounted as by hinge 43 to the topof the post. This disk guard will be held firmly but detachably in placeby a snap 44 on the post and engaging thelower part of the disk.Opposite the pulley 31 and bracket 30 the wire of the guard disk 41 isout away so that the disk may be swung to the left without interference.

Upon the bracket 30 below the fan shaft is mounted an arm 45 theoppositely projecting ends of which form bearings for roller guides 45.These roller guides are at right angles to the plane of the fan shaftand are in alignment with the upper or fan shaft pulley 31 with the belt33 located to the right of the guide-rollers as the parts are seen inFig. 1. The purpose of these guide rollers is to guide the belt 33 inthe proper plane to the upper pulley 31, that is in the plane of saidpulley, even though the upper part of the post carrying said fan mayhave been swung appreciably to the left on its adjusting bolt 25 inorder to direct the current of air from the fan downwardly more againstthe operators face and hands' These guide rollers or one of them mayalso assist in case the fan has been turned bodily at a slight anglerelative to the plane of the pul- I ley 13 in order to direct thecurrent of air from the fan either towards or from the person operatingthe machine.

Preferably the belt 33 used to connect the fan shaft pulley 31 to thepulley 13 on the sewing machine will be elastic and conveniently mayconsist simply of a small rubber band such as is commonly used to holdtogether small bundles of paper. This elastic belt gives a yieldingtraction and connection which enables the fan to be started easily andreduces any drag the fan would have against the sewing machine when thesewing machine is first started. The elastic band also enables the fanto be quickly connectcd to the sewing machine in that the band may bestretched to a considerable extent and run in that condition and soavoid stopping to adjust the post of the fan to any given height simplyto fit the machine. This enables the fan to be used at the mostconvenient height as far as the comfort of the user is concerned insteadof having to adjust the height of the fan proper to accommodate it tothe length of the belt used.

In operation the pulley 13 is adjusted in an obvious way to the frictionnut 12 of the sewing machine or tea similar projecting rotating part ofany other machine in connection with which the fan is to be used, thenthe base of the fan is simply placed upon the sewing machine table 7 soas to bring the pulley 31 about over the sewing machine if the personexpects to come back 1 to that machine or to use the fan therewithlater. One of the desirable features of the device is its extremesimplicity enabling it to be readily moved about from one machine toanother in a factory if desired.

The purpose of the smaller pulley 15 is to get a less or gentler currentof air by reducing the speed of the fan in case the sewing machine whenconnected through the larger pulley 14 is run so fast as to give toostrong a current of air.

To the top of the base 19 may be secured a thread guide 46 forconvenience in factory use.

lVhat I claim as new and desire to secure by Letters Patent is:

A rotary fan for actuation by a sewing machine motor, comprising aweighted base adapted to be supported on a sewing machine table, a stemengaging the base and adjustable vertically relatively thereto, a fanhead arranged for angular adjustment relatively to the stem, a fan shaftjournaled in said head and carrying a fan, a pulley on said shaftadapted to be belt geared to a pulley driven by the sewing machinemotor, and guide rollers to engage the belt to hold it in'gear with thefan shaft pulley at difierent inclinations of the fan head.

In Witness whereof I have affixed my signature, this 22nd day of March,1923.

HECTOR GATTI.

